In this work, we performed an analysis of previously known classical solutions of dilaton-gravity equations of motion describing neutral domain walls of positive tension, which are necessarily non-supersymmetric.
They could describe either a non-BPS D8-brane of type I or a \(\overline{D8}/O8\)  stack of a non-supersymmetric type IIA orientifold.
Among the three solutions, one featured a spontaneous compactification on a finite size interval with two end-of-the-world walls.
We showed that this Solution II\(^+\)  fits nicely into the framework of dynamical cobordism, recently proposed in [1]}, [2]}, [3]}.
As a new aspect, we explored a new type of solution of dilaton-gravity equations of motion. Such a solution has the potential to describe the two ETW 7-branes that, according to the cobordism conjecture, should exist in order to close-off the inconsistent background containing just the neutral domain wall.
A novel feature is the non-isotropic nature of this 7-brane solution.
